18808944 has 120 divisors (see below), whose sum is σ = 61746048. Its totient is φ = 4878720.

The previous prime is 18808943. The next prime is 18808949. The reversal of 18808944 is 44980881.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 18808896 and 18808905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18808943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25509 + ... + 26235.

Almost surely, 2^18808944 is an apocalyptic number.

18808944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18808944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30873024).

18808944 is an abundant number, since it is smaller than the sum of its proper divisors (42937104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18808944 is a wasteful number, since it uses less digits than its factorization.

18808944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 18808944 is about 4336.9279449859. The cubic root of 18808944 is about 265.9427392905.

The spelling of 18808944 in words is "eighteen million, eight hundred eight thousand, nine hundred forty-four".